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| | Environmental Protection of Guangdong Province (Site not responding. Last check: 2007-10-18) |
 | | Water quality of 10 of them, which are Nanshan river, Long gang river, Pin Shan river, Dongguan Channel, Shenzhen river, Nianjiang river, Xiao Dongjiang river Maomin section, Xiao Dongjiang river Zhanjiang Section and Jiuzhou river, are worst and belongs to Grade Bad V, stands 17.5%. |
 | | From the view of overall, in this year water quality that is good are the main stream of major rivers and main stream channel in Pearl River Delta like Dongjiang river, West jiang river, Beijiang river, Meijiang river, Hanjiang river, Moyang river, Tanjiang river. |
 | | Of bad water quality are river sections in cities and small rivers that go through cities, the main pollution index are NH3-N, oil and aerobic organic compound. |
| www.gdepb.gov.cn /eng/2002-2.htm (753 words) |
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